Tractor-belt link



El G0 TRACTOR BELT LINK. APPLICAfION man APR.3,0., ma.

Patented Apr. 18, 1922.

eaten caries.

EDWIN e. COX, or BERKELEY, CALIFORNIA.

TRACTOR-BELT I LINK.

Specification of Le'tterslatent. Patented Apr. 18, 1922.

Application filed April e0, 1918. Serial no, 231,652.

- An object of my invention is to provide a link for a tractor belt,that is designed to obtain a firm hold on the ground, may be readilyreplaced when broken, is interchangeable, and includes means adjacent tothe pivots for clearing away the mud.

Other objects and advantages will appear in the following specification,reference be- -ing had to the accompanying drawing in which V I Figure 1is a plan view of a portion of a tractor belt composed of the links,parts of the belt being shown insection,

. Figure 2 is a cross section on the line 22 of Figure 1, v

Figure 3 is a detail sectional view illustrating the action of the heeladjacent to each one of the pivots, in clearing the mud from the links,

Figure 4 is a detail section, and

Figure 5 is a detail perspective view of one of the links.

All of the links 1 of the tractor belt are shaped alike so that they areinterchangeable and the belt may be lengthened or shortened at will. Thebody 1 of the link has a longitudinal bore 2 which is occupied by thepintle 3 which projects at the ends of the body 1 and provides a pivotfor the adjacent link.

Arms 4: are cast divergingly on the body 1 and terminate in pivot heads5 which re.- ceive the projecting ends of the pintle 3 as justexplained. The inner surfaces 5 of the heads 5 are in the same plane asare'the surfaces 1 of the body 1 and by this arrangement, the fitting ofone link upon the other, as shown in Figure 1, is made possible.

Heels 6 project rearwardly from the body 1 at the'ends of the body andmove in circular planes adjacent to the arms 4 of the companion link.The relative movement of the heels 6. against the arms of the companionlink, causes the dislodgment of any accummulation of mud that may formin thespace between the bodies of the links. Obviously it isundersirable to have these spaces fill up and it may be readily seen theaction of the heels, as illustrated in Figure 3, will keep the spaceclear. These heels also perform the important function of keeping thebelt in alinement on the drive sprockets, particularly in backing.

"The cross-sectional shape of the body 1 may be made as desired, itbeing important however, that the body 1 terminate in a ridge -7 wellabove the surrounding edges of the arms 4.-. These ridges 7 of thebodies 1 are adapted to penetrate the ground so that the tractor beltobtains a firm hold to propel the machine forwardly. The heads 8 of thepintles 3 are elongated as shown in y Figure 4, andoccupy similarlyshaped recesses 9 in one of the arms 4. After the pintles are putinplace the free ends opposite to the elongated heads 8 are simply upsetas shown in Figure 1, so that the pintles are retained in position.

1 While the. construction of the link as herein described is that of agenerally preferred form, obviously modifications and changes may bemade without departing from the spirit of the invention or the scope ofthe claim. I

I claim z 7 A link consisting of a body portion having a transverseridge and a bore for a pintle, forwardly extending and diverging armsformed on the body portion, the ridge extending above the plane of thearms, said arms terminating in heads having the inner surfaces parallelwith and in the same plane as the ends ofthe body, each head having apintle hole and one of the holes having an elongated portion, andrearwardly projecting heels on the body'portion adjacent to the ends.

o. n. Amati, M. H. PERKINS.

